South Pasadena • AP Chemistry



AP ChemistryName______________________________ Period ____ Date ___/___/___ Atomic Theory, Elements, Molecules and CompoundsPRACTICE TEST- ANSWERS1.What is the formula of the ionic compound formed between Mg and Br?a)MgBrd)Mg2Br2b)Mg2Bre)Mg2Br3c)MgBr22.What is the formula of the ionic compound formed between Ca and P?a)Ca2P3d)Ca2Pb)CaPe)Ca3P2c)Ca5P103.What is the name of the SO32– ion?a)sulfated)sulfur trioxideb)nitratee)hydrogen sulfatec)sulfite4.What is the correct formula and charge for the chromate ion?a)CrO42–d)Cr2O7–b)CrO4–e)Cr3+c)Cr2O72–5.Which one of the following elements forms ions with two different valences?a)calciumc)ironb)arsenicd)fluorine6.The correct name for CCl4 isa)carbon(I) chlorideb)carbon chloridec)carbon tetrachlorided)monocarbon chloride(IV)e)carbochlorinate7.The correct formula for hydrogen telluride isa)HTec)H3Teb)H2Ted)HTe28.The correct formula for dinitrogen tetroxide isa)NO2d)NO3–b)N2O4e)(N2O)4c)N2O59.The correct name for S2Cl2 isa)sulfur dichlorideb)sulfur(I) chloridec)sulfur(II) chlorided)disulfur dichloridee)sulfur chloride10.The correct name for H3P isa)hydrogen phosphideb)trihydrogen phosphidec)hydrogen phosphated)phosphorus trihydridee)hydrogen triphosphate11.Certain properties are characteristic of metals. Which property means that you can pound the substance into a foil?a)ductilityc)sectilityb)conductivityd)malleability12.Which of the following is a metalloid?a) As b) Ag c) S d) Pb e) He13.Which of the following is a transition metal?a) Cl b) Ni c) P d) Ca e) C14.Which of the following is an alkali metal?a) Mg b) Kr c) K d) Al e) H15.Which of the following is an lanthanide?a) Xe b) Eu c) Cd d) P e) W16.Which element has the highest melting point?a) Pb b) Au c) Os d) W e) Hg17.Cathode rays start at thea)negative electrodec)positive electrodeb)power sourced)gas inside the tube18.Canal rays area)neutronsc)positive ionsb)protonsd)electrons19.Listed below are the charges and masses of four particles. Which one will be deflected the least in a mass spectrometer?a)+2, 2 amuc)+1, 1 amub)+4, 4 amud)+1, 4 amuLARGE MASS = SMALL DEFLECTION20.In a Millikan oil drop type experiment, the charge on four oil drops (in Coulombs) was found to be:3.33=1Coulombs8.88=2.6Coulombs6.66=2Coulombs11.10=3.33CoulombsDivide each by 3.33, smallest common factorWhat is the charge on the electron according to this experiment?a)1.11 Coulombc)4.44 Coulombb)2.22 Coulombd)11.10 Coulomb21.Pictured below is a schematic of the Rutherford experiment. Which scattered ?-particle gives the best evidence for the nuclear atom?a) a b) b c) c d) d e) ebounced off nucleus22.Which of the following is an isotope of the element with 20 protons (p=20) and 22 neutrons (n=22)?a)titanium-22c)calcium-40b)zirconium-40d)titanium-48For questions 23 - 27, use the following key:(each answer may be used once, more than once, or not at all)a)alpha b)beta c)gammad)alpha and beta, but not gamma23.A high energy form of light C24.Associated with a neutron changing into a proton B25.A high speed electron B26.Used by Ernest Rutherford as a “probe” A27.Most penetrating of the “Bequerel Rays” CFor questions 28-31, use the following key:(each answer may be used once, more than once, or not at all.)a)John Daltonb)Ernest Rutherfordc)J.J. Thomsond)Democritus28.His model of the atom has been called the “billiard ball” model. A29.He studied matter in cathode ray tubes. C30.His philosophical idea included the term “atomos”. D31.He added to the atomic theory the idea that atoms had positive and negative parts. C32. Consider the following notation: EQ \s(220, 86) RnWhich statement below is correct?a)This particle contains 86 protonsb)This particle has a mass number of 86c)This particle has an atomic number of 220d)This particle contains 220 neutrons ................
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